Main failure Mechanism of Capacitor Breakdown. (1) The dielectric material has defects or defects, or contains conductive impurities or conductive particles; (2) Electrical aging and thermal aging of dielectric; (3) Electrochemical reaction in dielectric; (4) Silver ion migration; (5) Mechanical dam

Capacitors belong to the most complex components of the type and specifications. When replacing the ceramic chip capacitors, the same type of capacitors should be used as far as possible, if the same type can not be found. The smaller the difference between the nominal capacity of ceramic chip capac

Substitution principle of variable Capacitor. In the fine tuning capacitor replacement, as far as possible to choose the same type of capacitor replacement, if the same type of capacitor replacement cannot be found. Attention should be paid to the nominal capacitance of the capacitor and the capacit

Substitution principle of Electrolytic Capacitor. When replacing electrolytic capacitors, the same type of capacitors should be used as far as possible, if the same type of electrolytic capacitors cannot be found. Note that the capacitance and voltage values of the selected electrolytic capacitors a

Replacement principle of Ceramic Chip Capacitor. In the ceramic chip capacitor replacement, as far as possible to choose the same type of capacitor replacement, if the same type of ceramic chip capacitor replacement cannot be found. Attention should be paid to selecting the nominal capacitance of th

Early metallized film capacitors were identified by CJ, and similar non metallized film paper capacitors were identified by CZ. Now, due to advanced production technology, organic film is easy to use, metal evaporation coating process is simple, and the frequency characteristics are better than pape

Metallized film capacitors emit the sound of Zizz when they pass alternating current. One of the reasons is that the self-healing sound that is specific to the membrane capacitance is not going to be very loud, and it's going to fade over time, and if you disappear, you have to pay attention to the

Metallized film capacitors have a so-called self-healing action. That is, when a small part of the electrode is short-circuited due to the weakness of the electrical boundary. The electrode metal around the short circuit part will restore insulation due to the electrostatic energy or short circu

Filtering: in the power supply circuit, the rectifier circuit changes the AC into pulsating DC, and after the rectifier circuit, an electrolytic capacitor with a large capacity is connected, and the charge-discharge characteristics are utilized. The pulsating DC voltage after rectifying is changed i

Bypass (decoupling): provides a low impedance path for some shunt elements in an AC circuit. In electronic circuits, decoupling capacitors and bypass capacitors play a role in anti-jamming, capacitance in different positions, the address is different. On the same circuit, the bypass capacitor is to